Lighthouse Mobile

· 0 checks — Mobile Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Performance issues directly impact user engagement and conversion rates.

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Request	Cache TTL	Transfer Size
app-analytics.orf.at/matomo.js	3600.0 s	42.4 KiB
/ec37cbb0-e91d-42b8-abef-51639d3499c3/loader.js?target=or...	7200.0 s	34.7 KiB
imagesrv.adition.com/js/srp.js	0.0 ms	24.0 KiB
adnz.co/semantiq/semantiq.js?tenantId=1655	0.0 ms	10.4 KiB
data-d6e13c60e8.orf.at/iomm/latest/manager/base/es6/bundle.js	86400.0 s	16.8 KiB
/sis/image/e523a17a-35ef-4a46-b6b0-e6543e820cad/AAABnbE_p...	604800.0 s	43.4 KiB
/sis/image/ae38ae34-7414-4c31-aa1f-5d65ed96f004/AAABnbFiZ...	604800.0 s	39.9 KiB
/sis/image/e1cd8f5f-5b56-4a82-9ba4-db704c44ce20/AAABnbFUx...	604800.0 s	39.8 KiB
imagesrv.adition.com/js/aut.js	0.0 ms	3.8 KiB
data-d6e13c60e8.orf.at/iomb/latest/sensor/manager/base/es6/bundle.js	86400.0 s	8.9 KiB
/sis/image/cbf3d109-206c-4c08-a8d8-700e6b2ba45c/AAABnbFM_...	604800.0 s	24.8 KiB
/sis/image/7c024493-ec59-4031-9db4-5da8f3f02299/AAABnbEH0...	604800.0 s	22.8 KiB
pipe.orf.at/admapper/news.orf.at/index.js	3600.0 s	2.3 KiB
pipe.orf.at/globus-2025/code/index.js	30.0 s	1.8 KiB
wetter.orf.at/api/jsonp/current/oe3?callback=initWeather&_=1776806669330	0.0 ms	1.2 KiB
data-d6e13c60e8.orf.at/iomm/latest/bootstrap/loader.js	86400.0 s	828 B
orf.at/oon/media/9.1/oonmedia.js	300.0 s	170 B

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
Donald Trump im Oval Office `a > div.oon-grid-image > picture > img`	/mims/2026/17/17/crops/w=590,h=393,q=60,r=2/3011138_maste...	61.8 KiB	54.2 KiB
Szene des Films „Michael“ `a > div.oon-grid-image > picture > img`	/mims/2026/16/93/crops/w=590,h=295,q=60,r=2/3002972_maste...	56.6 KiB	50.2 KiB
Der britische Premier Keir Starmer `a > div.oon-grid-image > picture > img`	/mims/2026/17/54/crops/w=590,h=295,q=60,r=2/3010535_maste...	52.5 KiB	46.6 KiB
Der designierte Apple-CEO John Ternus `a > div.oon-grid-image > picture > img`	/mims/2026/17/82/crops/w=295,h=171,q=60,r=2/3010393_maste...	17.2 KiB	15.2 KiB

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.

title: Preconnected origins

value: no origins were preconnected

description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.

title: Preconnect candidates

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size	Duration
orf.at/mojo.compressed/1_4_1/news//news/main.css?v=2026040810-940	12.0 KiB	374 ms
orf.at/mojo.compressed/1_4_1/news//news/common-main.css?v=2026040810-940	18.1 KiB	187 ms

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 70 ms 164.0 KiB

URL	Transfer Size	Est Savings
.bmpui-ui-icon{box-sizing:content-box;cursor:pointer;background-color:transparent; … } …	100.9 KiB	100.9 KiB
	23.6 KiB	20.3 KiB
orf.at/mojo.compressed/1_4_1/news//news/common-main.css?v=2026040810-940	18.0 KiB	16.7 KiB
@media (min-width: 36.875em){.display-only-mobile{display:none} …	15.4 KiB	15.4 KiB
orf.at/mojo.compressed/1_4_1/news//news/main.css?v=2026040810-940	11.9 KiB	10.9 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 820 ms 184.3 KiB

URL	Transfer Size	Est Savings
/vue-storyserver/newssport-videos/index.js?v=2026040810-9...	203.9 KiB	66.0 KiB
orf.at/mojo.compressed/1_4_1/news//news/main.js?v=2026040810-940	112.0 KiB	54.5 KiB
/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/sdk....	101.8 KiB	43.6 KiB
app-analytics.orf.at/matomo.js	42.1 KiB	20.2 KiB

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Total CPU Time	Script Evaluation	Script Parse
Unattributable	832 ms	363 ms	0.0 ms
orf.at/mojo.compressed/1_4_1/news//news/main.js?v=2026040810-940	395 ms	222 ms	31 ms
orf.at/	363 ms	14 ms	2.7 ms
app-analytics.orf.at/matomo.js	324 ms	302 ms	16 ms
/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/sdk....	272 ms	211 ms	33 ms
/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/ui-w...	223 ms	128 ms	29 ms
/vue-storyserver/newssport-videos/index.js?v=2026040810-9...	190 ms	144 ms	2.1 ms
assets.orf.at/vue-storyserver/product-navigation/js/app.js?v=2026040810-940	64 ms	58 ms	5.5 ms
imagesrv.adition.com/js/aut.js	52 ms	45 ms	1.5 ms

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

Category	Time Spent
Script Evaluation	1.7 s
Other	595 ms
Style & Layout	275 ms
Script Parsing & Compilation	180 ms
Rendering	139 ms
Garbage Collection	74 ms
Parse HTML & CSS	52 ms

Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reason	Failure type
The page has an unload handler in the main frame.	Actionable

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL
Eurovision Song Contest Vienna 2026 `main#content > div.flag-ticker-mobile > a.flag-ticker-mobile-content > img.flag-ticker-mobile-image`	assets.orf.at/flags/455.svg?_m=1776061007812
ORF-Logo `footer#page-footer > ul.footer-service > li > img.orf-brick`	orf.at/mojo/1_4_1/storyserver//news/common/images/orf-brick.svg

More information about the performance of your application. These numbers don't directly affect the Performance score.

●Layout shift culprits

●Document request latency

●Optimize DOM size

●Font display

●Forced reflow

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●Avoids enormous network payloads Total size was 1,748 KiB

●User Timing marks and measures 3 user timings

●Avoid long main-thread tasks 10 long tasks found

●Avoid non-composited animations 2 animated elements found

●Network Requests

●Network Round Trip Times 40 ms

●Server Backend Latencies 60 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Avoid multiple page redirects

●Initial server response time was short Root document took 70 ms

○INP breakdown

○LCP request discovery

○Avoid large layout shifts

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Noch 20 Tage bis zum Opening `main#content > div.flag-ticker-mobile > a.flag-ticker-mobile-content > h3.flag-ticker-mobile-headline`

These are opportunities to improve keyboard navigation in your application.

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
news `header.header > div.top-area-wrapper > div.logo-area > a.site-logo`

○Interactive controls are keyboard focusable

○Interactive elements indicate their purpose and state

○The page has a logical tab order

○Visual order on the page follows DOM order

○User focus is not accidentally trapped in a region

○The user's focus is directed to new content added to the page

○HTML5 landmark elements are used to improve navigation

○Offscreen content is hidden from assistive technology

○Custom controls have associated labels

○Custom controls have ARIA roles

●`[aria-*]` attributes match their roles

●`[aria-hidden="true"]` is not present on the document `<body>`

●`[role]`s have all required `[aria-*]` attributes

●`[role]` values are valid

●`[aria-*]` attributes have valid values

●`[aria-*]` attributes are valid and not misspelled

●Buttons have an accessible name

●Image elements have `[alt]` attributes

●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.

●ARIA attributes are used as specified for the element's role

●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

●`[aria-hidden="true"]` elements do not contain focusable descendents

●Elements use only permitted ARIA attributes

●Background and foreground colors have a sufficient contrast ratio

●Document has a `<title>` element

●`<html>` element has a `[lang]` attribute

●`<html>` element has a valid value for its `[lang]` attribute

●Links are distinguishable without relying on color.

●Links have a discernible name

●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

●No element has a `[tabindex]` value greater than 0

●Touch targets have sufficient size and spacing.

●`[lang]` attributes have a valid value

●Document has a main landmark.

●Deprecated ARIA roles were not used

○`[accesskey]` values are unique

○`button`, `link`, and `menuitem` elements have accessible names

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

○`[role]`s are contained by their required parent element

○Elements with the `role=text` attribute do not have focusable descendents.

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

○The page contains a heading, skip link, or landmark region

○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.

○Definition list items are wrapped in `<dl>` elements

○ARIA IDs are unique

○No form fields have multiple labels

○`<frame>` or `<iframe>` elements have a title

○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○Input buttons have discernible text.

○`<input type="image">` elements have `[alt]` text

○Form elements have associated labels

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Skip links are focusable.

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`<video>` elements contain a `<track>` element with `[kind="captions"]`

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

○Image elements do not have `[alt]` attributes that are redundant text.

○Identical links have the same purpose.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

Best Practices

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / Warning	Source
Unload event listeners are deprecated and will be removed.	imagesrv.adition.com/js/srp.js line 43, col 152

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

Why this matters

Performance issues directly impact user engagement and conversion rates.

Source	Description
orf.at/	`Access to XMLHttpRequest at 'https://assets.orf.at/flags/news-front-desktop-ticker-sekundaer.json?_o=orf.at' from origin 'https://orf.at' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.`
orf.at/	`Access to XMLHttpRequest at 'https://assets.orf.at/flags/news-front-desktop-ticker.json?_o=orf.at' from origin 'https://orf.at' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.`
orf.at/	`Access to XMLHttpRequest at 'https://assets.orf.at/flags/news-front-mobile-ticker.json?_o=orf.at' from origin 'https://orf.at' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.`
assets.orf.at/flags/news-front-mobile-ticker.json?_o=orf.at	`Failed to load resource: net::ERR_FAILED`
assets.orf.at/flags/news-front-desktop-ticker.json?_o=orf.at	`Failed to load resource: net::ERR_FAILED`
assets.orf.at/flags/news-front-desktop-ticker-sekundaer.json?_o=orf.at	`Failed to load resource: net::ERR_FAILED`

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Map URL
orf.at/oon/media/9.1.2/oonmedia.js
assets.orf.at/vue-storyserver/bulawindow-2023/js/app.js?v=2026040810-940	assets.orf.at/vue-storyserver/bulawindow-2023/js/app.js.map

●Uses HTTPS

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Displays images with correct aspect ratio

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●No issues in the `Issues` panel in Chrome Devtools

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Ensure proper origin isolation with COOP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

○Redirects HTTP traffic to HTTPS

○Mitigate clickjacking with XFO or CSP

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

Content Best Practices

Descriptive link text helps search engines understand your content. Learn how to make links more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destination	Link Text
orf.at/stories/einstellungen	hier

Format your HTML in a way that enables crawlers to better understand your app’s content.

○Structured data is valid

●Page isn’t blocked from indexing

●Document has a `<title>` element

●Document has a meta description

●Page has successful HTTP status code

●Links are crawlable

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`